Depth of field is the distance between the closest and farthest objects in a photo that appears acceptably sharp. Now your camera can only focus sharply at one point. But the transition from sharp to unsharp is gradual, and the term 'acceptably sharp' is a loose one!
A sentence fragment is an incomplete thought that has both subject and predicate but the connection between the two is not built. To proofread sentence fragments, we have to add an independent clause to complete a sentence and then add conjunctions to connect the two clauses.
C THE CAREFULLEST THATS THE ANSWER
